<template>
    <div class="list" ref="wrapper">
        <div>
        <div class="area">
            <div class="title border-topbottom">当前城市</div>
            <div class="button-list">
                <div class="button-wrapper">
                    <div class="button">{{this.currentCity}}</div>
                </div>
            </div>
        </div>
        <div class="area">
            <div class="title  border-topbottom">热门城市</div>
            <div class="button-list">
                <div class="button-wrapper" v-for="item of hot" :key="item.id"
               @click="handleCityClick(item.name)"
                >
                    <div class="button">{{item.name}}</div>
                </div>

            </div>

        </div>
        <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
            <div class="title  border-topbottom">{{key}}</div>
            <div class="item-list">
                <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
                v-on:click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
            </div>
        </div>
        </div>
    </div>
</template>
<script>
    import Bscroll from 'better-scroll'
    import {mapState,mapMutations} from 'vuex'
    export default{
        name:'CityList',
        props:{
          hot:Array,
          cities:Object,
            letter:String
        },
        computed:{
            ...mapState({
                currentCity:'city'
            })
        },
        methods: {
              handleCityClick (city) {
                 //this.$store.commit("changeCity",city)
                 this.changeCity(city)
                 this.$router.push('/')
                 },
                 ...mapMutations(['changeCity'])
            
        },
        mounted (){
            this.scroll = new Bscroll(this.$refs.wrapper,{ mouseWheel: true, click: true, tap: true })
           
        },
        watch:{
            letter(){
                if(this.letter){
                    //console.log(this.$refs)
                    const elmement=this.$refs[this.letter][0]
                    this.scroll.scrollToElement( elmement)
                }

            }
        }
    }
</script>
<style lang="stylus" scoped>
    @import '../../assets/styles/varibles.styl'
    .border-topbottom
        &:before
            border-color: #ccc
        &:after
            border-color: #ccc
    .border-bottom
        &:before
            border-color: #ccc
    .list
        overflow:hidden
        position:absolute
        top:1.58rem
        left:0
        right:0
        bottom:0

    .title
        line-height:.54rem
        background:#eee
        padding-left:.2rem
        color:#666
        font-size:.26rem
    .button-list
        padding:.1rem .6rem .1rem .1rem
        overflow :hidden
    .button-wrapper
        float:left
        width: 33%
    .button
        padding:.1rem
        margin:.1rem
        text-align :center
        border:.02rem solid #ccc
        border-radius:.06rem
    .item-list
      .item
        line-height:.76rem
        color:#666
        padding-left:.2rem


</style>